William thomas ebed



(No Model.) 1

W. T. REED.

SPARK ARRESTBR.

No. 352,353. Patented Nov. 9, 1886.

llNiTED v STATES PATENT: OFF CE.

\VILLIAM THOMAS REED, OF WINNIPEG, MANITOBA, CANADA.

SPARK-ARRESTER.

SPECIFICATION forming part of Letters Patent No. 352,353, dated November 9, 1886.

Application filed April 2,1886. Serial No. 197,561. (No model.)

To all whom it may concern:

Be it known that LWILLIAM THOMAS REED, of the city of WVinnipeg, in the county of Selkirk, in the Province of Manitoba, Canada, mechanical engineer, have invented an Improved Spark-Arrester, of which the following is a specification.

The device is more particularly adapted for locomotive-boilers and the object of the in vention is to arrangea device within the smokebox of the boiler which will arrest the sparks and effectually grind them to a fine powder before they are discharged through the smoke stack; and itconsists, essentially, in placing a corrugated deflectingplate set at an angle in front of the tubes, so that the sparks escaping from them will strike against the corrugated plate and be directed against a corrugated base-plate,at the end of which a curved corrugated plate is placed, which latter plates con stitute additional grindingsurfaces for the purpose of grinding to a powder the sparks which first strike the corrugated deflectingplate, substantially as hereinafter specified.

Figure 1 is a longitudinal section of the smoke-box in perspective. Fig. 2 is a detail showing the manner of securing the deflectingplate.

A is the tube-sheet.

B is the steam-pipe leading to the cylinders.

O are the tubes, and D the exhaust-nozzle.

E is a coarse wirenetting extending across thesrnoke-boxiin niediately below the exhaustnozzle D.

F is a corrugated deflecting-plate, preferably corrugated on both sides,and set atan angle, as indicated, immediately in front of the tubes 0. This deflecting-plate F rests upon an angle-iron, G, riveted to the smoke-box, and is supported thereon by a series of studs, a, screwed into the angleiron G, each stud being preferably provided with a cotter-pin, which, when inserted in the slot made in the stud a, holds the plate F in position,while it permits the plate F to be readily removed when it be-, comes necessary to clean the tubes 0: I may mention here that the plate F may be made cline, as indicated, for when so set the best results are secured.

K is a corrugated plate, preferably curved, as indicated, and connected to the smoke-box door I.

The effect of the corrugated plates arranged as shown and described is as follows: The sparks as they escape from the ends of the tubes strike against the corrugated plate F, which deflects them toward the base-plate H. The draft produced by the exhaust-steam from the nozzle D draws the sparks along the corrugated base-plate H till they strike the corrugated plate K, thence up along its curved surface .and against the netting E, through which only sparks so small as to dono harm can escape, the larger pieces being whirled around the smoke-box against the corrugated surfaces of the plates mentioned until they are ground so fine as to do no harm when they escape from the smoke-stack. The corrugated surfaces of the plates F, H, and K are preferably chilled in order to increase their durability.

WVhat I claim as my invention is- 1. The corrugated deflecting plate F, in combination with the corrugated base-plate H and corrugated plate K, arranged substantially as and for'the purpose specified.

2. The corrugated deflecting plate F, in combination with the corrugated base-plate H,corrugated plate K, and netting E,arranged substantially as and for the purpose specified.

3. The corrugated deflecting-plate F, supported onthe angle-iron G by the studs a',substantially as and for the purpose specified.

Toronto, March 20, 1886.

w. TH. REED.

In presence of- CHARLES C. BALDWIN, CHAS. H. mean. 

